keywords: Aeromagnetic, Euler deconvolution, Werner deconvolution, Banke complex, lineaments
Werner and Euler deconvolution techniques have been applied on aeromagnetic data to characterize geologic structures/lineaments around Banke ring complex, Nigeria. The aeromgnetic data were obtained from the newly acquired high resolution aeromagnetic data by Nigerian Geological Survey Agency. Four profiles were laid on the aeromagnetic data around the Banke complex for Werner deconvolution analysis. Magnetic susceptibility values range from 1.8926x10-3 – 5.8118x10-3 SI units, which suggests that the rocks/minerals include biotite, garnet, fayalite, olivine, phyllite, quartzite, dolomite, igneous rocks while dip angle have values from 5.60 – 81.20, and could be attributed to Pan-African shallow structures (contact model). The trend of the lineaments/ fractures is dominant in the NW-SE direction, conforms with the trends obtained for basement structures in previous studies. The trends of the lineaments/ fractures were likely established during the Pan-African orogeny. Depth range produced by 3D Euler deconvolution is from 500 - 2500 m for all the lineaments. This gives an insight of approximate depth range of all the lineaments/ fractures across the whole map in the study areaunlike, Werner deconvolution which is profile biased.
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